pci_eisa.c

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/*
 * Minimalist driver for a generic PCI-to-EISA bridge.
 *
 * (C) 2003 Marc Zyngier <[email protected]>
 *
 * This code is released under the GPL version 2.
 *
 * Ivan Kokshaysky <[email protected]> :
 * Generalisation from i82375 to PCI_CLASS_BRIDGE_EISA.
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/eisa.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/init.h>

/* There is only *one* pci_eisa device per machine, right ? */
static struct eisa_root_device pci_eisa_root;

static int __init pci_eisa_init(struct pci_dev *pdev,
                const struct pci_device_id *ent)
{
    int rc;

    if ((rc = pci_enable_device (pdev))) {
        printk (KERN_ERR "pci_eisa : Could not enable device %s\n",
            pci_name(pdev));
        return rc;
    }

    pci_eisa_root.dev              = &pdev->dev;
    pci_eisa_root.res          = pdev->bus->resource[0];
    pci_eisa_root.bus_base_addr    = pdev->bus->resource[0]->start;
    pci_eisa_root.slots        = EISA_MAX_SLOTS;
    pci_eisa_root.dma_mask         = pdev->dma_mask;
    dev_set_drvdata(pci_eisa_root.dev, &pci_eisa_root);

    if (eisa_root_register (&pci_eisa_root)) {
        printk (KERN_ERR "pci_eisa : Could not register EISA root\n");
        return -1;
    }

    return 0;
}

static struct pci_device_id pci_eisa_pci_tbl[] = {
    { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
      PCI_CLASS_BRIDGE_EISA << 8, 0xffff00, 0 },
    { 0, }
};

static struct pci_driver __refdata pci_eisa_driver = {
    .name       = "pci_eisa",
    .id_table   = pci_eisa_pci_tbl,
    .probe      = pci_eisa_init,
};

static int __init pci_eisa_init_module (void)
{
    return pci_register_driver (&pci_eisa_driver);
}

device_initcall(pci_eisa_init_module);
MODULE_DEVICE_TABLE(pci, pci_eisa_pci_tbl);